111-86-4Relevant articles and documents
Cs2CO3-promoted efficient carbonate and carbamate synthesis on solid phase
Salvatore, Ralph N.,Flanders, Vincent L.,Ha, Dang,Jung, Kyung Woon
, p. 2797 - 2800 (2000)
Mild and efficient preparation of alkyl carbonates and carbamates on solid supports is described herein. Alcohols or amines were coupled with Merrifield's resin through a CO2 linker in the presence of cesium carbonate and tetrabutylammonium iodide (TBAI).
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Ralston
, (1940)
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Direct terminal alkylamino-functionalization via multistep biocatalysis in one recombinant whole-cell catalyst
Schrewe, Manfred,Ladkau, Nadine,Buehler, Bruno,Schmid, Andreas
, p. 1693 - 1697 (2013)
Direct and regiospecific amino-functionalization of non-activated carbon could be achieved using one recombinant microbial catalyst. The presented proof of concept shows that heterologous pathway engineering allowed the construction of a whole-cell biocatalyst catalyzing the terminal amino-functionalization of fatty acid methyl esters (e.g., dodecanoic acid methyl ester) and alkanes (e.g., octane). By coupling oxygenase and transaminase catalysis in vivo, both substrates are converted with absolute regiospecificity to the terminal amine via two sequential oxidation reactions followed by an amination step. Such demanding chemical three-step reactions achieved with a single catalyst demonstrate the tremendous potential of whole-cell biocatalysts for the production of industrially relevant building blocks. Copyright
Kinetic studies of the Hydrolysis of n-Octylamine on the Surface of a Sodium Dodecyl Sulfate Micelle by the Ultrasonic Absorption Method
Yamashita, Teruyo,Yano, Hiroshige,Harada, Shoji,Yasunaga, Tatsuya
, p. 5482 - 5485 (1983)
Ultrasonic relaxation absorption has been observed in aqueous solution of n-octylamine (OA) in the presence of micelles of sodium dodecyl sulfate (SDS).From various experiments changing (i) the concentrations of OA and SDS, (ii) the alkyl-chain length of the detergent and amine, (iii) the pH of the solution, and (iv) the type of detergent, the relaxation absorption has been ascribed to the hydrolysis of OA on the surface of the SDS micelle: C8H17NH3+ + OH- C8H17NH2 + H2O.The forward (kf) and backward (kb) rate constants, the apparent equilibrium constant (K), and the volume change (ΔV) for the hydrolysis have been determined to be γ2kf = 5.5*108 M-1 s-1, kb = 1.2*107 s-1, K (=γ2kf/kb) = 45 M-1, and ΔV = 26.5 cm3 mol-1 at 20 deg C, respectively, where γ is the mean ionic activity coefficient.The values of γ2kf and K were found to be smaller than the corresponding values in the absence of the micelle by a factor of about 1/50.These micellar effects have been interpreted in terms of electrostatic interactions between the micelle and OH- and OA+ ions.
PROCESS FOR PRODUCING A CATALYST, CATALYST AND USE THEREOF
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Page/Page column 13-16, (2021/06/26)
A process for producing a supported catalyst comprising metal nanoparticles, said process comprises the following steps: (a) preparing a supported catalyst comprising metal nanoparticles; (b) peducing the catalyst of step (a); (c) treating the reduced catalyst of step (b) with at least one alcohol, and (d) calcining the treated catalyst of step (c) to remove carbon species, to produce said supported catalyst. A catalyst obtainable from this process can be used in amination, hydrogenation, dehydrogenation, hydrogenolysis and aerobic oxidation reactions.
Direct Enzymatic Synthesis of Fatty Amines from Renewable Triglycerides and Oils
Bevinakatti, Han,Citoler, Joan,Finnigan, William,Turner, Nicholas J.
, (2021/11/30)
Fatty amines represent an important class of commodity chemicals which have broad applicability in different industries. The synthesis of fatty amines starts from renewable sources such as vegetable oils or animal fats, but the process has multiple drawbacks that compromise the overall effectiveness and efficiency of the synthesis. Herein, we report a proof-of-concept biocatalytic alternative towards the synthesis of primary fatty amines from renewable triglycerides and oils. By coupling a lipase with a carboxylic acid reductase (CAR) and a transaminase (TA), we have accomplished the direct synthesis of multiple medium and long chain primary fatty amines in one pot with analytical yields as high as 97 %. We have also performed a 75 mL preparative scale reaction for the synthesis of laurylamine from trilaurin, obtaining 73 % isolated yield.
